WhenToBird

Haemorhous mexicanus · Fringillidae

When Do House Finches Arrive in Idaho?

Adult male House Finch
Photo: Daughter Dad, CC BY 4.0 via iNaturalist

The House Finch is in Idaho all year. It turns up on about 42% of checklists at its peak (early December) and on 23% in its quietest week (mid June).

When to look

PresentAll year
Peak weekDec 1-7early December
Quietest weekJun 15-21mid June

Best: early December. Here all year. Peak: on about 42% of Idaho checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprcommon
  5. Maypeak season
  6. Juncommon
  7. Julcommon
  8. Augcommon
  9. Seppeak season
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

Darker months: more checklists report it. Outlined: peak month.

0%20%40%60%Jan 1-7: 33% of 9357 checklistsJan 8-14: 36% of 6408 checklistsJan 15-21: 34% of 6358 checklistsJan 22-31: 34% of 8601 checklistsFeb 1-7: 34% of 5611 checklistsFeb 8-14: 37% of 6090 checklistsFeb 15-21: 37% of 7973 checklistsFeb 22-28: 35% of 5866 checklistsMar 1-7: 35% of 6144 checklistsMar 8-14: 32% of 6456 checklistsMar 15-21: 31% of 6786 checklistsMar 22-31: 31% of 9539 checklistsApr 1-7: 31% of 7202 checklistsApr 8-14: 30% of 7608 checklistsApr 15-21: 30% of 8069 checklistsApr 22-30: 31% of 10973 checklistsMay 1-7: 33% of 9481 checklistsMay 8-14: 32% of 11318 checklistsMay 15-21: 32% of 9141 checklistsMay 22-31: 27% of 13984 checklistsJun 1-7: 25% of 8897 checklistsJun 8-14: 24% of 8504 checklistsJun 15-21: 24% of 8078 checklistsJun 22-30: 23% of 9665 checklistsJul 1-7: 25% of 7144 checklistsJul 8-14: 24% of 6557 checklistsJul 15-21: 24% of 6430 checklistsJul 22-31: 26% of 8696 checklistsAug 1-7: 28% of 5896 checklistsAug 8-14: 27% of 5643 checklistsAug 15-21: 26% of 6151 checklistsAug 22-31: 30% of 7863 checklistsSep 1-7: 30% of 5769 checklistsSep 8-14: 30% of 5646 checklistsSep 15-21: 31% of 5460 checklistsSep 22-30: 33% of 6363 checklistsOct 1-7: 36% of 4980 checklistsOct 8-14: 36% of 5096 checklistsOct 15-21: 35% of 4878 checklistsOct 22-31: 37% of 6426 checklistsNov 1-7: 38% of 4822 checklistsNov 8-14: 36% of 4999 checklistsNov 15-21: 38% of 4601 checklistsNov 22-30: 41% of 6027 checklistsDec 1-7: 44% of 4180 checklistsDec 8-14: 42% of 4775 checklistsDec 15-21: 39% of 6522 checklistsDec 22-31: 39% of 7792 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Frequency is the share of complete checklists in Idaho that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

JanFebMarAprMayJunJulAugSepOctNovDec
today
Second week of November

Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.

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Where in Idaho

Best counties

Share of checklists at the peak
  1. Ada CountyBest early October · 1322 checklists that week, 84,430 in all64%
  2. Bannock CountyBest mid October · 113 checklists that week, 8,210 in all60%
  3. Twin Falls CountyBest mid November · 159 checklists that week, 12,478 in all55%
  4. Nez Perce CountyBest late June · 142 checklists that week, 10,708 in all55%
  5. Bonneville CountyBest late November · 129 checklists that week, 6,998 in all53%
  6. Shoshone CountyBest late December · 27 checklists that week, 2,886 in all52%

Best spots

Share of checklists at the peak
  1. Hulls Gulch Reserve (Highlands)Ada County, best late May · 21 checklists that week, 394 in all91%
  2. Hulls Gulch ReserveAda County, best late October · 41 checklists that week, 2,292 in all89%
  3. Lucky Peak State ParkAda County, best late April · 42 checklists that week, 1,311 in all85%

Busy spots report more of everything; compare the checklist counts before you drive anywhere.

Best time of day

In Idaho, the House Finch is most often listed on checklists started between 7 and 9 am (39% of those checklists).

0%10%20%30%40%12 am: too few checklists (180) to judge1 am: too few checklists (176) to judge2 am: too few checklists (169) to judge3 am: too few checklists (164) to judge4 am: too few checklists (450) to judge5 am: too few checklists (2270) to judge6 am: 33% of 9122 checklists7 am: 39% of 22204 checklists8 am: 40% of 38672 checklists9 am: 38% of 38930 checklists10 am: 33% of 37338 checklists11 am: 30% of 33508 checklists12 pm: 27% of 28544 checklists1 pm: 26% of 25774 checklists2 pm: 26% of 24296 checklists3 pm: 27% of 21784 checklists4 pm: 30% of 19051 checklists5 pm: 28% of 14150 checklists6 pm: 28% of 10014 checklists7 pm: 27% of 7495 checklists8 pm: too few checklists (4352) to judge9 pm: too few checklists (1449) to judge10 pm: too few checklists (525) to judge11 pm: too few checklists (208) to judge12a3a6a9a12p3p6p9p
Share of checklists started in each local hour that reported it. It reflects when people go birding as well as when birds are active. Grey hours have too few checklists (under 2% of the state’s, or under 200) to judge.
Week-by-week table
MonthDays 1-78-1415-2122-end
January33%36%34%34%
February34%37%37%35%
March35%32%31%31%
April31%30%30%31%
May33%32%32%27%
June25%24%24%23%
July25%24%24%26%
August28%27%26%30%
September30%30%31%33%
October36%36%35%37%
November38%36%38%41%
December44%42%39%39%

Neighboring states

  • Montana: year-round, peaks the second week of December
  • Utah: year-round, peaks the second week of December
  • Oregon: year-round, peaks the second week of April
  • Washington: year-round, peaks mid April

Common questions

When do House Finches arrive in Idaho?
The House Finch is in Idaho all year. It turns up on about 42% of checklists at its peak (early December) and on 23% in its quietest week (mid June).
When do House Finches leave Idaho?
The House Finch does not leave Idaho: it is reported all year, from 23% of checklists in mid June to 42% in early December.
When is the best time to see a House Finch in Idaho?
The House Finch is reported most often in early December, on about 42% of Idaho checklists.
Where in Idaho are House Finches seen most often?
By county, Ada County, Bannock County, and Twin Falls County have the highest peak reporting rates for the House Finch (counties with at least 200 checklists).